The best search tool for something like this is the
Custom Search on the left side of the Beesource
home page. The "Search" box on the individual forum pages is not the same tool and not particularly effective.
The home page search is actually a Google
Custom Search tool, limited to just Beesource. If you choose, you can partially control search results by adding quotes to a selected portion of your search phrase. For example,
side drawer pollen trap
returns results where both 'side' and 'drawer' are mentioned, but not necessarily next to each other. On the other hand,
"side drawer" pollen trap
returns only results where the words 'side drawer' appear together.